So, had som spare time today and thought i would push the limit for what is possible to measure with this home made device.
My setup is 2 Reach units, one as a base and the other as rover, all connected together on the same local wifi. I only need relative position for this prosject. I used 1 and 5Hz, Gps, Glonass and Sbas
I user tripod on the rover as it would slide much easier over the surface where i wrote and drew on.
Well, im just gonna let the pictures talk for its self.
One funny problem i faced trying to plot those small letters, was the thick line. The 1cm thick line i drew with chalk was giving me a challange whether i was on the center or the edge of the chalk line. Who would thought that??
Guess i have to sharpen my pencil next time
I wrote my nick , TB_RTK and plotted a wrench i found.

And here is screenshot from rtklib, you can see it s getting real cluttering but still readable.
Had to measure it twice since i bumbed the rig so it shiftet few millimeter in the beginning of the letter R (bottom picture).
Really cool

No postprocessing. Solution from reach.
I had fix more or less all the time doing this for over an hour. Did adjust from 1Hz to 5Hz and back again to see if i could get font more clearly and during this changes fix dropped for few minutes and then back to fix again.

One see, use and read about it. Cm accuracy. I never thought much about it, cm…
But when put it in perspective like this, it kind a puzzles you.
Anyways, these reach units is really cool. Great work team Emlid